A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5925-00-855-1088
NSN 5910-00-555-3003
NSN 5835-01-379-1407
NSN 5935-00-970-9104
NSN 5965-01-593-1813
NSN 6220-00-079-2943
NSN 5998-00-236-3280
NSN 5985-01-160-1252
NSN 5945-00-244-1579
NSN 6130-01-306-4794
NSN 6320-00-857-4073
NSN 6220-01-581-7352